I need some helpp.pweez!10 points..?

Question:What are sowing rates? And where can i find the price ranges for portable electrical germination chambers? And last but not least, what are the dimensions of a chamber that could hold 100-200 trays?

*If you dont know the answers to them all its fine. I will give ten points.

Answers:
I don't know the answer to any of your questions. But might I make a suggestion. Go to your local garden center. They could actually show you physical trays and how they fit together, there are probably more than 1 option.
Also, you could look on the Internet and see if you can spot a set up that you like and maybe they could recreate it.
Good luck!